CVE-2024-44982

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/msm/dpu: cleanup FB if dpu_format_populate_layout fails

If the dpu_format_populate_layout() fails, then FB is prepared, but not cleaned up. This ends up leaking the pin_count on the GEM object and causes a splat during DRM file closure:

msm_obj->pin_count WARNING: CPU: 2 PID: 569 at drivers/gpu/drm/msm/msm_gem.c:121 update_lru_locked+0xc4/0xcc […] Call trace: update_lru_locked+0xc4/0xcc put_pages+0xac/0x100 msm_gem_free_object+0x138/0x180 drm_gem_object_free+0x1c/0x30 drm_gem_object_handle_put_unlocked+0x108/0x10c drm_gem_object_release_handle+0x58/0x70 idr_for_each+0x68/0xec drm_gem_release+0x28/0x40 drm_file_free+0x174/0x234 drm_release+0xb0/0x160 __fput+0xc0/0x2c8 __fput_sync+0x50/0x5c __arm64_sys_close+0x38/0x7c invoke_syscall+0x48/0x118 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x4c/0x120 el0t_64_sync_handler+0x100/0x12c el0t_64_sync+0x190/0x194 irq event stamp: 129818 hardirqs last enabled at (129817): [<ffffa5f6d953fcc0>] console_unlock+0x118/0x124 hardirqs last disabled at (129818): [<ffffa5f6da7dcf04>] el1_dbg+0x24/0x8c softirqs last enabled at (129808): [<ffffa5f6d94afc18>] handle_softirqs+0x4c8/0x4e8 softirqs last disabled at (129785): [<ffffa5f6d94105e4>] __do_softirq+0x14/0x20

Patchwork: https://patchwork.freedesktop.org/patch/600714/

Affected Software

VendorProductVersion RangeStatus
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < 9b8b65211a880af8fe8330a101e1e239a2d4008faffected
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < 7ecf85542169012765e4c2817cd3be6c2e009962affected
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < a3c5815b07f4ee19d0b7e2ddf91ff9f03ecbf27daffected
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < 02193c70723118889281f75b88722b26b58bf4aeaffected
LinuxLinux25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef < bfa1a6283be390947d3649c482e5167186a37016affected
LinuxLinux4.19affected
LinuxLinux0 < 4.19unaffected
LinuxLinux5.15.166 <= 5.15.*unaffected
LinuxLinux6.1.107 <= 6.1.*unaffected
LinuxLinux6.6.48 <= 6.6.*unaffected
LinuxLinux6.10.7 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References